-- @testpoint: opengauss关键字message_length(非保留)，作为函数名,部分测试点合理报错

--关键字不带引号-成功
drop function if exists message_length;
create function message_length(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带双引号-成功
drop function if exists "message_length";
create function "message_length"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带单引号-合理报错
drop function if exists 'message_length';
create function 'message_length'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `message_length`;
create function `message_length`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--清理环境
drop function if exists message_length(integer);
drop function if exists "message_length"(integer);